The Role of Iron and Silica in the Structure of the Radular Teeth of Certain Marine Molluscs

Jones, E. Idris; McCance, R. A.; Shackleton, L. R. B.

doi:10.1242/jeb.12.1.59

Cited by 48 publications

(16 citation statements)

References 5 publications

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“…In Cephalopoda, only one study on the radular chemistry exists, to the best of our knowledge. In Octopoda 43 targeted, but did not detect Si and Fe. We here determined Na, S, Cu, Si, P, Cl, Ca, and Mg in the radula of Histioteuthis spec.…”

Section: Discussionmentioning

confidence: 86%

“…Within the Gastropoda, the Patellogastropoda received the most attention 41 – 43 , 90 , 103 – 115 . However, few studies focused on the overall radular composition, since most analyses, e.g.…”

Section: Discussionmentioning

confidence: 99%

“…In fewer studies, other elements were of interest [e.g. 42 , 43 , 90 , 105 , 112 , 113 ]. Overall, in Patellogastropoda, Na, Mg, Si, P, Cl, K, Ca, Fe, Cu, and S were previously found.…”

Section: Discussionmentioning

confidence: 99%

“…Only very few past studies focused on the radular composition in non-patelliform gastropods [e.g. 41 – 43 ], cephalopods 43 , or scaphopods 43 – 45 .…”

Section: Introductionmentioning

confidence: 99%

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Elemental analyses reveal distinct mineralization patterns in radular teeth of various molluscan taxa

Krings

Brütt

Gorb

2022

Sci Rep

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The molluscan phylum is the second specious animal group with its taxa feeding on a variety of food sources. This is enabled by the radula, a chitinous membrane with embedded teeth, one important autapomorphy. Between species, radulae can vary in their morphology, mechanical, and chemical properties. With regard to chemical composition, some taxa (Polyplacophora and Patellogastropoda) were studied extensively in the past decades, due to their specificity to incorporate high proportions of iron, calcium, and silicon. There is, however, a huge lack of knowledge about radular composition in other taxa. The work presented aims at shedding light on the chemistry by performing energy-dispersive X-ray spectroscopy analyses on 24 molluscan species, thereof two Polyplacophora, two Cephalopoda, and 20 Gastropoda, which was never done before in such a comprehensiveness. The elements and their proportions were documented for 1448 individual, mature teeth and hypotheses about potential biomineralization types were proposed. The presented work additionally comprises a detailed record on past studies about the chemical composition of molluscan teeth, which is an important basis for further investigation of the radular chemistry. The found disparity in elements detected, in their distribution and proportions highlights the diversity of evolutionary solutions, as it depicts multiple biomineralization types present within Mollusca.

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Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

“…In fewer studies, other elements were of interest [e.g. 42 , 43 , 90 , 105 , 112 , 113 ]. Overall, in Patellogastropoda, Na, Mg, Si, P, Cl, K, Ca, Fe, Cu, and S were previously found.…”

Section: Discussionmentioning

confidence: 99%

“…Only very few past studies focused on the radular composition in non-patelliform gastropods [e.g. 41 – 43 ], cephalopods 43 , or scaphopods 43 – 45 .…”

Section: Introductionmentioning

confidence: 99%

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Elemental analyses reveal distinct mineralization patterns in radular teeth of various molluscan taxa

Krings

Brütt

Gorb

2022

Sci Rep

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“…These characters are also present in the Polyplacophora and Monoplacophora (Wingsrand, 1985;Haszprunar, 1988;McLean, 1990). Apart from monoplacophorans and limpets, the Conchifera show no evidence of mineralized compounds in the radulae (Jones et al. 1935;Lowenstam, 1962a;Haszprunar, 1988).…”

Section: Discussionmentioning

confidence: 98%

Minerals of the Radular Apparatus of Falcidens sp. (Caudofoveata) and the Evolutionary Implications for the Phylum Mollusca

Cruz

Lins

Farina

1998

The Biological Bulletin

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Minerals have been found in the radular teeth of molluscs from the classes Caudofoveata, Polyplacophora, Monoplacophora, and Gastropoda (Patellogastropoda: Acmaeidae, Patellidae). Here we report the discovery of amorphous iron oxide and hydroxyapatite in the highly modified radular apparatus of Falcidens sp. (Caudofoveata). The mineralization process in Falcidens sp. is unique: the components of the radular apparatus, unlike those of other molluscs, are not renewed during the animal's lifetime. We propose that the presence of mineralized teeth among the molluscs is not necessarily connected to their manner of obtaining food and suggest that the molluscan common ancestor had mineralized teeth.

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The Chiton Radula: A Model System for Versatile Use of Iron Oxides*

Joester

Brooker

2016

Iron Oxides

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The Role of Iron and Silica in the Structure of the Radular Teeth of Certain Marine Molluscs

Abstract: The radular teeth of the Patellidae consist largely of silica and iron. The teeth of the Chitonidae contain large amounts of iron and little or no silica. The teeth of Dentalium contain small amounts of silica but no iron. Iron and silica have not been found in other radular teeth.

Cited by 48 publications

References 5 publications

Elemental analyses reveal distinct mineralization patterns in radular teeth of various molluscan taxa

Elemental analyses reveal distinct mineralization patterns in radular teeth of various molluscan taxa

Minerals of the Radular Apparatus of Falcidens sp. (Caudofoveata) and the Evolutionary Implications for the Phylum Mollusca

The Chiton Radula: A Model System for Versatile Use of Iron Oxides*

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